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-rw-r--r--modules/brotli/common/platform.h60
1 files changed, 43 insertions, 17 deletions
diff --git a/modules/brotli/common/platform.h b/modules/brotli/common/platform.h
index 84c448c4c..f5ca4435b 100644
--- a/modules/brotli/common/platform.h
+++ b/modules/brotli/common/platform.h
@@ -24,12 +24,11 @@
#define BROTLI_COMMON_PLATFORM_H_
#include <string.h> /* memcpy */
-#include <stdlib.h> /* malloc, free */
#include <brotli/port.h>
#include <brotli/types.h>
-#if defined(OS_LINUX) || defined(OS_CYGWIN)
+#if defined(OS_LINUX) || defined(OS_CYGWIN) || defined(__EMSCRIPTEN__)
#include <endian.h>
#elif defined(OS_FREEBSD)
#include <machine/endian.h>
@@ -41,6 +40,10 @@
#define BROTLI_X_BIG_ENDIAN BIG_ENDIAN
#endif
+#if BROTLI_MSVC_VERSION_CHECK(12, 0, 0)
+#include <intrin.h>
+#endif
+
#if defined(BROTLI_ENABLE_LOG) || defined(BROTLI_DEBUG)
#include <assert.h>
#include <stdio.h>
@@ -308,8 +311,7 @@ static BROTLI_INLINE void BrotliUnalignedWrite64(void* p, uint64_t v) {
}
#else /* BROTLI_ALIGNED_READ */
/* Unaligned memory access is allowed: just cast pointer to requested type. */
-#if defined(ADDRESS_SANITIZER) || defined(THREAD_SANITIZER) || \
- defined(MEMORY_SANITIZER)
+#if BROTLI_SANITIZED
/* Consider we have an unaligned load/store of 4 bytes from address 0x...05.
AddressSanitizer will treat it as a 3-byte access to the range 05:07 and
will miss a bug if 08 is the first unaddressable byte.
@@ -334,7 +336,7 @@ extern "C" {
#define BrotliUnalignedRead32 __sanitizer_unaligned_load32
#define BrotliUnalignedRead64 __sanitizer_unaligned_load64
#define BrotliUnalignedWrite64 __sanitizer_unaligned_store64
-#else
+#else /* BROTLI_SANITIZED */
static BROTLI_INLINE uint16_t BrotliUnalignedRead16(const void* p) {
return *(const uint16_t*)p;
}
@@ -356,7 +358,7 @@ static BROTLI_INLINE void BrotliUnalignedWrite64(void* p, uint64_t v) {
typedef BROTLI_ALIGNED(1) uint64_t brotli_unaligned_uint64_t;
static BROTLI_INLINE uint64_t BrotliUnalignedRead64(const void* p) {
- return (uint64_t) ((brotli_unaligned_uint64_t*) p)[0];
+ return (uint64_t) ((const brotli_unaligned_uint64_t*) p)[0];
}
static BROTLI_INLINE void BrotliUnalignedWrite64(void* p, uint64_t v) {
brotli_unaligned_uint64_t* dwords = (brotli_unaligned_uint64_t*) p;
@@ -374,7 +376,7 @@ static BROTLI_INLINE void BrotliUnalignedWrite64(void* p, uint64_t v) {
}
#endif /* BROTLI_GNUC_HAS_ATTRIBUTE(aligned, 2, 7, 0) */
#endif /* BROTLI_64_BITS */
-#endif /* ASAN / TSAN / MSAN */
+#endif /* BROTLI_SANITIZED */
#endif /* BROTLI_ALIGNED_READ */
#if BROTLI_LITTLE_ENDIAN
@@ -466,20 +468,20 @@ static BROTLI_INLINE void BROTLI_UNALIGNED_STORE64LE(void* p, uint64_t v) {
#endif
#if defined(BROTLI_ENABLE_LOG)
-#define BROTLI_DCHECK(x) assert(x)
#define BROTLI_LOG(x) printf x
#else
-#define BROTLI_DCHECK(x)
#define BROTLI_LOG(x)
#endif
#if defined(BROTLI_DEBUG) || defined(BROTLI_ENABLE_LOG)
+#define BROTLI_DCHECK(x) assert(x)
static BROTLI_INLINE void BrotliDump(const char* f, int l, const char* fn) {
fprintf(stderr, "%s:%d (%s)\n", f, l, fn);
fflush(stderr);
}
#define BROTLI_DUMP() BrotliDump(__FILE__, __LINE__, __FUNCTION__)
#else
+#define BROTLI_DCHECK(x)
#define BROTLI_DUMP() (void)(0)
#endif
@@ -523,17 +525,41 @@ BROTLI_MIN_MAX(size_t) BROTLI_MIN_MAX(uint32_t) BROTLI_MIN_MAX(uint8_t)
(A)[(J)] = __brotli_swap_tmp; \
}
-/* Default brotli_alloc_func */
-static void* BrotliDefaultAllocFunc(void* opaque, size_t size) {
- BROTLI_UNUSED(opaque);
- return malloc(size);
+#if BROTLI_64_BITS
+#if BROTLI_GNUC_HAS_BUILTIN(__builtin_ctzll, 3, 4, 0) || \
+ BROTLI_INTEL_VERSION_CHECK(16, 0, 0)
+#define BROTLI_TZCNT64 __builtin_ctzll
+#elif BROTLI_MSVC_VERSION_CHECK(12, 0, 0)
+#if defined(BROTLI_TARGET_X64)
+#define BROTLI_TZCNT64 _tzcnt_u64
+#else /* BROTLI_TARGET_X64 */
+static BROTLI_INLINE uint32_t BrotliBsf64Msvc(uint64_t x) {
+ uint32_t lsb;
+ _BitScanForward64(&lsb, x);
+ return lsb;
}
+#define BROTLI_TZCNT64 BrotliBsf64Msvc
+#endif /* BROTLI_TARGET_X64 */
+#endif /* __builtin_ctzll */
+#endif /* BROTLI_64_BITS */
-/* Default brotli_free_func */
-static void BrotliDefaultFreeFunc(void* opaque, void* address) {
- BROTLI_UNUSED(opaque);
- free(address);
+#if BROTLI_GNUC_HAS_BUILTIN(__builtin_clz, 3, 4, 0) || \
+ BROTLI_INTEL_VERSION_CHECK(16, 0, 0)
+#define BROTLI_BSR32(x) (31u ^ (uint32_t)__builtin_clz(x))
+#elif BROTLI_MSVC_VERSION_CHECK(12, 0, 0)
+static BROTLI_INLINE uint32_t BrotliBsr32Msvc(uint32_t x) {
+ unsigned long msb;
+ _BitScanReverse(&msb, x);
+ return (uint32_t)msb;
}
+#define BROTLI_BSR32 BrotliBsr32Msvc
+#endif /* __builtin_clz */
+
+/* Default brotli_alloc_func */
+BROTLI_COMMON_API void* BrotliDefaultAllocFunc(void* opaque, size_t size);
+
+/* Default brotli_free_func */
+BROTLI_COMMON_API void BrotliDefaultFreeFunc(void* opaque, void* address);
BROTLI_UNUSED_FUNCTION void BrotliSuppressUnusedFunctions(void) {
BROTLI_UNUSED(&BrotliSuppressUnusedFunctions);